Steema Central

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Steema.TeeChart.Styles;
using Steema.TeeChart.Tools;

namespace AxisBreakTest
{
	public partial class Form1 : Form
	{
		public Form1()
		{
			InitializeComponent();

			tChart1.Aspect.View3D = false;
		}

		private void Form1_Load(object sender, EventArgs e)
		{
			FastLine series = new FastLine(tChart1.Chart);
			FillSampleValues(series, 100);

			tChart1.Axes.Left.SetMinMax(1, 10);
			tChart1.Zoom.Allow = false;
			axisBreaksTool1.GapSize = 0;
		}

		private void FillSampleValues(FastLine series, int count)
		{
			Random r = new Random(0);
			for (int i = 1; i <= count; i++)
			{
				series.Add(i, r.Next(100));
			}
		}

		private void tChart1_MouseDown(object sender, MouseEventArgs e)
		{
			if (e.Button == System.Windows.Forms.MouseButtons.Left)
			{
				double minimum = 1;
				double maximum = 10;

				// NOTE: This is where the problem occurs.
				double yValue = tChart1.Axes.Left.CalcPosPoint(e.Y);

				if (yValue >= maximum)
				{
					// If the user has clicked on or above the top edge of the chart, 
					// apply a break from 9-10
					minimum = 9;
				}
				else
				{
					minimum = Math.Floor(yValue);
					maximum = minimum + 1;
				}

				MessageBox.Show(minimum + " --> " + maximum);
				AxisBreak categoryBreak = new AxisBreak(axisBreaksTool1);
				categoryBreak.StartValue = minimum;
				categoryBreak.EndValue = maximum;
				categoryBreak.Style = AxisBreakStyle.None;
				categoryBreak.Enabled = true;
			}
			else if (e.Button == System.Windows.Forms.MouseButtons.Right)
			{
				axisBreaksTool1.Breaks.Clear();
			}
		}
	}
}